65544134473 has 2 divisors, whose sum is σ = 65544134474. Its totient is φ = 65544134472.

The previous prime is 65544134459. The next prime is 65544134479. The reversal of 65544134473 is 37443144556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57959118009 + 7585016464 = 240747^2 + 87092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65544134473 is a prime.

It is not a weakly prime, because it can be changed into another prime (65544134479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32772067236 + 32772067237.

It is an arithmetic number, because the mean of its divisors is an integer number (32772067237).

Almost surely, 2^65544134473 is an apocalyptic number.

It is an amenable number.

65544134473 is a deficient number, since it is larger than the sum of its proper divisors (1).

65544134473 is an equidigital number, since it uses as much as digits as its factorization.

65544134473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 46.

The spelling of 65544134473 in words is "sixty-five billion, five hundred forty-four million, one hundred thirty-four thousand, four hundred seventy-three".